Writing to the 20 new cardinals he will create in February, Pope Francis said they should graciously accept that their friends, family and faithful will want to celebrate, but they also should ensure that the celebrations are not exaggerated.

Pope Francis on Friday warned the Vatican's top marriage judges that they should not "lock the salvation of persons within the straits of legalism" and indicated he wants the church to no longer charge for the sometimes onerous and expensive annulment process.

"This is a point I want to emphasize: the sacraments are free," Francis told jurists of the Roman Rota, the church's final court of appeals for annulments.

"The sacraments give us grace," he said. "And a marriage proceeding" -- like an annulment -- "touches on the sacrament of marriage."